TDRSS lightcurve for Trigger=1032024

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 11 Feb 21 08:43:34 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     1032024,   Seg_Num: 0
GRB_RA:          269.433d {+17h 57m 44s} (J2000),
                 269.826d {+17h 59m 18s} (current),
                 268.501d {+17h 54m 00s} (1950)
GRB_DEC:         -46.299d {-46d 17' 57"} (J2000),
                 -46.300d {-46d 18' 00"} (current),
                 -46.294d {-46d 17' 39"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1778 [cnts]    Image_Peak=107 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   124     E_range: 25-100 keV
BKG_INTEN:       19873 [cnts]
BKG_TIME:        31381.51 SOD {08:43:01.51} UT
BKG_DUR:         8 [sec]
GRB_DATE:        19256 TJD;    42 DOY;   21/02/11
GRB_TIME:        31398.34 SOD {08:43:18.34} UT
GRB_PHI:         -22.52 [deg]
GRB_THETA:        14.62 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     13.74 [sigma]
IMAGE_SIGNIF:    7.09 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +2  -3  +0  +1 -54  +0 
SUN_POSTN:       325.19d {+21h 40m 46s}  -13.90d {-13d 53' 55"}
SUN_DIST:         56.30 [deg]   Sun_angle= 3.7 [hr] (West of Sun)
MOON_POSTN:      321.43d {+21h 25m 42s}  -19.77d {-19d 46' 21"}
MOON_DIST:        49.58 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      346.09,-10.77 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      269.57,-22.86 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 55.66,1.29 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=634725803).

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 11 Feb 21 09:01:51 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     1032024,   Seg_Num: 0
GRB_RA:          269.433d {+17h 57m 44s} (J2000),
                 269.826d {+17h 59m 18s} (current),
                 268.501d {+17h 54m 00s} (1950)
GRB_DEC:         -46.299d {-46d 17' 57"} (J2000),
                 -46.300d {-46d 18' 00"} (current),
                 -46.294d {-46d 17' 39"} (1950)
GRB_DATE:        19256 TJD;    42 DOY;   21/02/11
GRB_TIME:        31398.34 SOD {08:43:18.34} UT
TRIGGER_INDEX:   124
GRB_PHI:         -22.52 [deg]
GRB_THETA:        14.62 [deg]
DELTA_TIME:      77.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.74 [sigma]
IMAGE_SIGNIF:    7.09 [sigma]
LC_URL:          sw01032024000msb.lc

GCN template for BAT paragraph

  • Click here! 
    At 08:43:18 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 210211 ***A*** (trigger=1032024).  Swift slewed immediately to the burst.
The BAT on-board calculated location is 
RA, Dec 269.433, -46.299 which is 
   RA(J2000) = 17h 57m 44s
   Dec(J2000) = -46d 17' 57"
with an uncertainty of 3 arcmin (radius, 90% containment, including 
systematic uncertainty).  The BAT light curve showed a [**double-peaked**]
structure with a duration of about TTT sec.  The peak count rate
was ~2525 counts/sec (15-350 keV), at ~4 sec after the trigger.
  • Test version of draft template

    Initial TDRSS lightcurve and spacecraft attitude plot

    TDRSS lightcurve from T0-30 to T0+50 (zoom in)

    TDRSS light curve from T0-1 to T0+2 (More zoom in)

    1.6s binned TDRSS light curve

    Tilan's background subtracted TDRSS light curves

    Extended TDRSS light curve and spacecraft attitude plot(s)

    Extended TDRSS lc No.1

    Extended TDRSS lc No.2

    Extended TDRSS lc No.3

    Extended TDRSS lc No.4

    TDRSS extended lightcurve from T0-1 to T0+2

    T50 and T90 calculation

    ******************************************
         battblocks v1.18
------------------------------------------
     Input Data: bat_raw_lc.fits
     Output GTI: bb.gti
 Events to Skip: 128     Changepoint log(prob) Prior: 6.000000
  Internal Tick: 1.000000e-04 s
  Lookback time: 0 s
 Bkg. Subtract?: yes (for fluence/T50/T90 calculations)
------------------------------------------
  Estimated T90 duration: 5.248 s +/- 0.256 s
  Estimated T50 duration: 3.84 s +/- 0.128 s
  Estimated Peak Interval: MET   634725829.56800008 +/- 0.500000 s
  Estimated background rate 1:     5042.768 near MET 634725812.800000 s
  Estimated background rate 2:     4897.331 near MET 634725950.080000 s
  Estimated total duration: 64.64 s (for data selection)
       (from MET 634725824.000000 to MET 634725888.640000)
  Estimated total fluence: 5680.582307 count
  Created GTI with 8 entries
------------------------------------------

    Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)

    bat_grb_pos_cat.sh 269.433 -46.299 0.083
No match

    Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)

    python compare_catalog.py 269.433 -46.299
No match

    Link to SIMBAD

  • Click here for the SIMBAD search!

    Frank's UVOT result

  • Click here!

    Frank's UVOT Blinking images

  • Click here!

    Elevation angle of GRB/Sun at the ground telescope locations

    GSFC, Greenbelt, Maryland
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 11 9 257.664243  -36.462638
 Obj: 2021 2 11 9 317.324069  -16.072143
  • the object visibility at GSFC, Greenbelt, Maryland 
     
MMT Observatory, Mt. Hopkins, Arizona
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 11 9 230.498109  -64.445814
 Obj: 2021 2 11 9 308.082241  -31.866151
  • the object visibility at MMT, Mt. Hopkins, Arizona 
     
Hale Telescope, Palomar Mountain, California
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 11 9 216.684617  -66.728049
 Obj: 2021 2 11 9 306.033666  -36.894202
  • the object visibility at Hale Telescope, Palomar Mt., California 
     
Mauna Kea, Hawaii
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 11 9 100.372453  -65.839228
 Obj: 2021 2 11 9 323.492377  -53.456798
  • the object visibility at Mauna Kea, Hawaii 
     
Siding Spring Obs., Australia
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 11 9 72.963002  -1.155011
 Obj: 2021 2 11 9 16.945206  -9.322503
  • the object visibility at Siding Spring Obs., Australia 
     
Tokyo, Japan
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 11 9 74.841314  -2.536981
 Obj: 2021 2 11 9 56.364288  -56.871652
  • the object visibility at Tokyo, Japan 
     
William Herschel Telescope, La Palma, Canary Islands, Spain
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 11 9 293.778606  12.548009
 Obj: 2021 2 11 9 351.793404  14.185455
  • the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain 
     
Gemini South, Cerro Pachon, Chile
      TimeUT       Azimuth     Elevation
 Sun: 2021 2 11 9 298.311823  -17.374539
 Obj: 2021 2 11 9 307.238571  38.318031
  • the object visibility at Gemini South, Cerro Pachon, Chile 
     
 
 
The data/results are in /local/data/bat1/prebascript/trigger1032024/tdrss_ql/
 
bat_raw_lc.fits  : TDRSS FITS light curve from GCN
gcn_position.txt : GCN BAT position notice
ratelc_tdrss.qdp : QDP file of the TDRSS light curve
tdrss_lc.gif     : GIF TDRSS light curve
sc_att.qdp       : QDP file of the spacecraft attitude
sc_att.gif       : GIF spacecraft attitude
bb.gti           : Bayesian block GTI file (battblocks)
dur.gti          : Duration GTI file (battblocks)
battblocks.log   : Output log of battblocks
 


    Plot creation:
Thu Feb 11 04:02:24 EST 2021